package org.tigris.subversion.subclipse.ui.conflicts;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.actions.OpenFileAction;
import org.tigris.subversion.subclipse.core.resources.SVNTreeConflict;

public class OpenFileInSystemEditorAction extends OpenFileAction {
  private ISelectionProvider selectionProvider;

  public OpenFileInSystemEditorAction(IWorkbenchPage page, ISelectionProvider selectionProvider) {
    super(page);
    this.selectionProvider = selectionProvider;
  }

  protected List getSelectedResources() {
    ArrayList openableFiles = new ArrayList();
    IStructuredSelection selection = (IStructuredSelection) selectionProvider.getSelection();
    Iterator iter = selection.iterator();
    while (iter.hasNext()) {
      Object element = iter.next();
      if (element instanceof SVNTreeConflict) {
        SVNTreeConflict treeConflict = (SVNTreeConflict) element;
        IResource resource = treeConflict.getResource();
        if (resource instanceof IFile && resource.exists()) {
          openableFiles.add(resource);
        }
      }
    }
    return openableFiles;
  }

  protected List getSelectedNonResources() {
    return Collections.EMPTY_LIST;
  }
}
